You can use xenon lamps under the cabinets if you match them watt for watt in high efficiency somewhere else in the kitchen.
This is the part that I see as counter productive from an energy savings point of view. If the customer wants something specific that is not qualified as high efficiency, you can just add some additional high efficiency lighting someplace else until you get to the right ratio. Now when they turn them all on they are using even more energy
I will not disagree that new technologies use less energy to get the same amount of light. I do not believe that they cost the consumer less money after figuring in the cost and maintenance. Maintenance is good for those of us in the business of maintaining these things but adds a lot to the cost of lighting.
I feel the same way about all the controls on automobiles - anymore the slightest problem means the vehicle is inoperable and only a highly skilled tech is going to fix it. Yes it uses less fuel for the same activity as older vehicles but cost more to own and maintain.
Saving energy is simple - if you don't presently need to use something turn it off. Our nation is one of the laziest out there and most of us don't care. We like our technology devices and can't live without them. You would think some of the highest energy prices ever during the last few years would change peoples habits but from my observations most people are still using energy the way they always have at the very least and many are using more than ever.